diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/cpu/baytrail/cpu.c | 1 | ||||
| -rw-r--r-- | arch/x86/cpu/broadwell/cpu.c | 1 | ||||
| -rw-r--r-- | arch/x86/cpu/cpu_x86.c | 1 | ||||
| -rw-r--r-- | arch/x86/cpu/ivybridge/model_206ax.c | 1 | ||||
| -rw-r--r-- | arch/x86/cpu/tangier/sysreset.c | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/io.h | 66 |
6 files changed, 70 insertions, 1 deletions
diff --git a/arch/x86/cpu/baytrail/cpu.c b/arch/x86/cpu/baytrail/cpu.c index 56e98131d7..2eb917283b 100644 --- a/arch/x86/cpu/baytrail/cpu.c +++ b/arch/x86/cpu/baytrail/cpu.c @@ -203,4 +203,5 @@ U_BOOT_DRIVER(cpu_x86_baytrail_drv) = { .bind = cpu_x86_bind, .probe = cpu_x86_baytrail_probe, .ops = &cpu_x86_baytrail_ops, + .flags = DM_FLAG_PRE_RELOC, }; diff --git a/arch/x86/cpu/broadwell/cpu.c b/arch/x86/cpu/broadwell/cpu.c index 02b3169cf5..232fa40eb5 100644 --- a/arch/x86/cpu/broadwell/cpu.c +++ b/arch/x86/cpu/broadwell/cpu.c @@ -764,4 +764,5 @@ U_BOOT_DRIVER(cpu_x86_broadwell_drv) = { .probe = cpu_x86_broadwell_probe, .ops = &cpu_x86_broadwell_ops, .priv_auto_alloc_size = sizeof(struct cpu_broadwell_priv), + .flags = DM_FLAG_PRE_RELOC, }; diff --git a/arch/x86/cpu/cpu_x86.c b/arch/x86/cpu/cpu_x86.c index 2b6cc9f22d..1aaf851bb4 100644 --- a/arch/x86/cpu/cpu_x86.c +++ b/arch/x86/cpu/cpu_x86.c @@ -94,4 +94,5 @@ U_BOOT_DRIVER(cpu_x86_drv) = { .of_match = cpu_x86_ids, .bind = cpu_x86_bind, .ops = &cpu_x86_ops, + .flags = DM_FLAG_PRE_RELOC, }; diff --git a/arch/x86/cpu/ivybridge/model_206ax.c b/arch/x86/cpu/ivybridge/model_206ax.c index 33e5c6263d..6edc3e233c 100644 --- a/arch/x86/cpu/ivybridge/model_206ax.c +++ b/arch/x86/cpu/ivybridge/model_206ax.c @@ -478,4 +478,5 @@ U_BOOT_DRIVER(cpu_x86_model_206ax_drv) = { .bind = cpu_x86_bind, .probe = cpu_x86_model_206ax_probe, .ops = &cpu_x86_model_206ax_ops, + .flags = DM_FLAG_PRE_RELOC, }; diff --git a/arch/x86/cpu/tangier/sysreset.c b/arch/x86/cpu/tangier/sysreset.c index e762ee1b81..b03bc28f93 100644 --- a/arch/x86/cpu/tangier/sysreset.c +++ b/arch/x86/cpu/tangier/sysreset.c @@ -44,5 +44,4 @@ U_BOOT_DRIVER(tangier_sysreset) = { .id = UCLASS_SYSRESET, .of_match = tangier_sysreset_ids, .ops = &tangier_sysreset_ops, - .flags = DM_FLAG_PRE_RELOC, }; diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h index c05c6bf8a2..81def0afd3 100644 --- a/arch/x86/include/asm/io.h +++ b/arch/x86/include/asm/io.h @@ -241,6 +241,72 @@ static inline void sync(void) #define __iormb() dmb() #define __iowmb() dmb() +/* + * Read/write from/to an (offsettable) iomem cookie. It might be a PIO + * access or a MMIO access, these functions don't care. The info is + * encoded in the hardware mapping set up by the mapping functions + * (or the cookie itself, depending on implementation and hw). + * + * The generic routines don't assume any hardware mappings, and just + * encode the PIO/MMIO as part of the cookie. They coldly assume that + * the MMIO IO mappings are not in the low address range. + * + * Architectures for which this is not true can't use this generic + * implementation and should do their own copy. + */ + +/* + * We assume that all the low physical PIO addresses (0-0xffff) always + * PIO. That means we can do some sanity checks on the low bits, and + * don't need to just take things for granted. + */ +#define PIO_RESERVED 0x10000UL + +/* + * Ugly macros are a way of life. + */ +#define IO_COND(addr, is_pio, is_mmio) do { \ + unsigned long port = (unsigned long __force)addr; \ + if (port >= PIO_RESERVED) { \ + is_mmio; \ + } else { \ + is_pio; \ + } \ +} while (0) + +static inline u8 ioread8(const volatile void __iomem *addr) +{ + IO_COND(addr, return inb(port), return readb(addr)); + return 0xff; +} + +static inline u16 ioread16(const volatile void __iomem *addr) +{ + IO_COND(addr, return inw(port), return readw(addr)); + return 0xffff; +} + +static inline u32 ioread32(const volatile void __iomem *addr) +{ + IO_COND(addr, return inl(port), return readl(addr)); + return 0xffffffff; +} + +static inline void iowrite8(u8 value, volatile void __iomem *addr) +{ + IO_COND(addr, outb(value, port), writeb(value, addr)); +} + +static inline void iowrite16(u16 value, volatile void __iomem *addr) +{ + IO_COND(addr, outw(value, port), writew(value, addr)); +} + +static inline void iowrite32(u32 value, volatile void __iomem *addr) +{ + IO_COND(addr, outl(value, port), writel(value, addr)); +} + #include <asm-generic/io.h> #endif /* _ASM_IO_H */ |